Variable

Unmatched

Average

Standard error

matched

Experimental group

Control group

Standard

deviation

Standard deviation reduced

pgdp

U

33,089

24,985

31.7

M

29,819

30,032

−0.8

97.4

secience

U

62,922

14,538

28.4

M

31,425

26,494

2.9

89.8

Thi

U

38.269

35.431

22.0

M

37.175

37.648

−3.7

83.3

FC

U

90,462

19,381

49.0

M

48,848

48,359

0.3

99.3

hstudent

U

10,005

26,183

63.0

M

62,376

59,410

3.4

96.2